In semi-conductor strain gagues, the change in resistance on application of strain
A
is much higher than that in the case of metal strain gaugs and this is mainly due to change in dimensions.
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B
is much higher than that in the case of metal stain gauges and this is mainly due to change in piezo resistivity
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C
is equval to that in the case of metal strain gauges.
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D
is lower than that in the case of metal strain gauges.
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Solution
The correct option is B is much higher than that in the case of metal stain gauges and this is mainly due to change in piezo resistivity In semi-conductor strain gagues, the change in resistance on application of strain is much higher than that in the case of metal stain gauges and this is mainly due to change in piezo resistivity.